Split type supercharger rotor structure

Abstract

The split type supercharger rotor structure comprises a turbine box and an air compression wheel box, a turbine shaft is rotationally arranged in the turbine box, a turbine impeller is arranged at one end of the turbine shaft, an air compression wheel shaft is rotationally arranged in the air compression wheel box, and an air compressor impeller is arranged at one end of the air compression wheel shaft; a transmission groove is inwards formed in the end of the compressor wheel shaft, a plurality of protrusions are arranged on the inner wall of the transmission groove, the end of the turbine shaft is rotationally arranged in the transmission groove, a plurality of inner grooves are formed in the turbine shaft in the circumferential direction, an elastic transmission structure is arranged in each inner groove, and the elastic transmission structures are arranged in the transmission grooves. The elastic transmission structure is in transmission fit with the bulge; and the turbine box and the air compression wheel box are respectively connected with a waste gas pipe and an air inlet pipe. According to the split type supercharger rotor structure, through modular design and a unique transmission mechanism, flexible and independent starting and efficient synchronous running of the turbine shaft and the compressor wheel shaft are achieved.

Description

Technical Field

[0001] The present application belongs to the technical field of impeller machinery, and in particular relates to a split supercharger rotor structure. Background Art

[0002] In existing internal combustion engines and gas turbine systems, the compressor is a key component responsible for compressing air and sending it into the combustion chamber to improve combustion efficiency and power output. However, traditional compressor designs often integrate the turbine and compressor in the same housing. Although this integrated design is compact, it is inconvenient when it comes to maintenance and replacement of parts. When any component in the turbine or compressor is damaged, it usually needs to be disassembled and replaced as a whole, which not only increases maintenance costs, but also prolongs downtime, affecting the overall operating efficiency of the equipment.

[0003] In addition, at the beginning of the engine startup, due to the small amount of exhaust gas and low temperature, the turbine under the traditional design often finds it difficult to quickly reach a sufficient speed to effectively drive the compressor, which causes the compressor to start slowly, thus affecting the engine's rapid response capability and overall performance. To overcome this problem, some designs try to improve the starting performance by adding additional starting devices or optimizing the shape of the turbine impeller blades, or adding turbine flow area adjustment devices, but these methods often increase the complexity and cost of the system. Summary of the invention

[0004] In view of this, the present application aims to propose a split supercharger rotor structure to solve the problem of insufficient turbine speed in the initial stage of engine startup.

[0005] To achieve the above purpose, the technical solution of this application is implemented as follows: The present application provides a split supercharger rotor structure, including a turbine box and a compressor box, wherein a turbine shaft is rotatably arranged in the turbine box, a turbine impeller is arranged at one end of the turbine shaft, and a compressor impeller is rotatably arranged in the compressor box, a compressor impeller is arranged at one end of the compressor impeller shaft; A transmission groove is provided inwardly at the end of the compressor impeller shaft, and a plurality of protrusions are provided on the inner wall of the transmission groove. The end of the turbine shaft is rotatably arranged in the transmission groove, and a plurality of inner grooves are provided circumferentially on the turbine shaft. An elastic transmission structure is installed in each of the inner grooves, and the elastic transmission structure cooperates with the protrusions for transmission.

[0006] Furthermore, the elastic transmission structure comprises an elastic member and a transmission block, one end of the elastic member is fixed in the inner groove, and the other end is fixedly connected to the transmission block.

[0007] Furthermore, the elastic member is a telescopic spring.

[0008] Furthermore, bearings are provided on the outer walls of the turbine box and the compressor wheel box, and the turbine shaft and the compressor wheel shaft are assembled and connected to the bearings.

[0009] Furthermore, the transmission groove is arranged in a stepped shape, the turbine shaft extends into the transmission groove, and the protrusions are arranged circumferentially on the inner wall of the transmission groove.

[0010] Furthermore, the protrusion and the transmission groove are integrally arranged.

[0011] Furthermore, the cross section of the protrusion is triangular.

[0012] Furthermore, the turbine box and the compressor box are also connected to an exhaust pipe and an intake pipe respectively.

[0013] Compared with the prior art, the split supercharger rotor structure described in this application has the following beneficial effects: The split supercharger rotor structure described in this application realizes flexible independent startup and efficient synchronous operation of the turbine shaft and the compressor shaft through modular design and innovative transmission mechanism; at the initial stage of engine startup, the turbine shaft can respond and accelerate quickly, and then the friction between the transmission block and the transmission groove can smoothly drive the compressor shaft to start, thereby improving the overall startup efficiency; at the same time, the modular design facilitates the individual replacement of damaged parts and reduces maintenance costs. In addition, when the engine stops, the continued rotation of the compressor impeller not only reduces the impact of the sudden stop, but also plays a role in heat dissipation and cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0015] Figure 1 This is a schematic diagram of a split supercharger rotor structure according to an embodiment of the present application; Figure 2 This is a schematic diagram of the elastic transmission structure described in an embodiment of the present application.

[0016] Description of reference numerals: 1-turbine box; 2-compressor wheel box; 3-exhaust pipe; 4-intake pipe; 5-turbine shaft; 6-turbine impeller; 7-compressor wheel shaft; 8-compressor impeller; 9-transmission groove; 10-inner groove; 11-transmission block; 12-telescopic spring; 13-bearing; 14-protrusion. DETAILED DESCRIPTION

[0017] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0018] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should have the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The words "first", "second" and similar words used in the embodiments of the present application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprises" and other similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but can be

[0019] Including electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0020] See also Figure 1 As shown, this embodiment provides a split supercharger rotor structure, including a turbine box 1 and a compressor box 2, a turbine shaft 5 is rotatably provided in the turbine box 1, a turbine impeller 6 is provided at one end of the turbine shaft 5, a compressor shaft 7 is rotatably provided in the compressor box 2, a compressor impeller 8 is provided at one end of the compressor shaft 7; The end of the compressor shaft 7 is provided with a transmission groove 9 inwardly, and the inner wall of the transmission groove 9 is provided with a plurality of protrusions 14. The end of the turbine shaft 5 is rotatably arranged in the transmission groove 9, and a plurality of inner grooves 10 are provided circumferentially on the turbine shaft 5. An elastic transmission structure is installed in each inner groove 10, and the elastic transmission structure cooperates with the protrusion 14 in transmission, wherein the elastic transmission structure includes an elastic member and a transmission block 11, and the elastic member is a telescopic spring 12, one end of the telescopic spring 12 is fixed in the inner groove 10, and the other end is fixedly connected to the transmission block 11; The turbine housing 1 and the compressor housing 2 are also connected to an exhaust pipe 3 and an intake pipe 4 respectively.

[0021] Specifically, in this embodiment, the turbine box 1 and the compressor box 2 are separately arranged and fixed to the engine by bolts and other fixing structures. Through this modular design, the turbine structure or the compressor structure can be replaced separately when it is damaged. When in use, the exhaust gas from the combustion of the engine fuel enters the turbine box 1 through the exhaust pipe 3, driving the turbine impeller 6 to rotate. When the turbine impeller 6 rotates, the compressor impeller 8 is driven to rotate through the transmission of the turbine shaft 5 and the compressor shaft 7. When the compressor impeller 8 rotates, air is delivered to the engine.

[0022] A transmission groove 9 is embedded in the end of the compressor wheel shaft 7, the head diameter of the turbine shaft 5 is smaller than the diameter of the transmission groove 9, and the head of the turbine shaft 5 is rotatably set in the transmission groove 9, and the outer wall of the turbine shaft 5 is provided with a groove, and an elastic member and a transmission block 11 connected to the elastic member are arranged in the groove. In the prior art, when the engine is started, the amount of exhaust gas generated is relatively small. Since the turbine shaft 5 also needs to drive the compressor impeller 8 to rotate, the load is relatively large, and the turbine impeller 6 takes a long time to be pushed. In the rotor structure described in the present application, when the engine is just started, the turbine shaft 5 and the compressor wheel shaft 7 are independent of each other, so that the turbine shaft 5 can rotate faster, and then gradually accelerate under the action of inertia. When the transmission block 11 rotates, it moves outward under the action of centrifugal force and contacts the inner wall of the transmission groove 9, thereby driving the compressor wheel shaft 7 to rotate and enter normal operation.

[0023] In some embodiments, bearings 13 are provided on the outer walls of the turbine box 1 and the compressor box 2, and the turbine shaft 5 and the compressor shaft 7 are assembled and connected with the bearings 13. The turbine shaft 5 and the compressor shaft 7 are rotatably connected with the turbine box 1 and the compressor box 2 respectively through the bearings 13.

[0024] In some embodiments, the transmission groove 9 is arranged in a stepped shape, the turbine shaft 5 extends into the transmission groove 9, and the protrusions 14 are arranged circumferentially on the inner wall of the transmission groove 9; The protrusion 14 and the transmission groove 9 are integrally arranged, and the cross section of the protrusion 14 is triangular.

[0025] Specifically, in this embodiment, the protrusion 14 can be a right-angled triangle structure, whose hypotenuse is connected to the transmission groove 9. When the turbine shaft 5 rotates rapidly, the transmission block 11 pushes the protrusion 14 through the right-angled side of the protrusion 14, so that the compressor shaft 7 rotates. When the engine stops working, the turbine shaft 5 loses power, the speed decreases, and the centrifugal force of the transmission block 11 decreases, so that under the action of the tension of the telescopic spring 12, the transmission block 11 disengages from the protrusion 14, and the compressor shaft 7 continues to rotate for a period of time under the action of inertia, so that the turbine impeller 6 continues to rotate, which helps to reduce the impact caused by sudden stop and can also have the effect of heat dissipation and cooling.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

[0027] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A split supercharger rotor structure, characterized in that: It comprises a turbine box and a compressor box, wherein a turbine shaft is rotatably arranged in the turbine box, a turbine impeller is arranged at one end of the turbine shaft, and a compressor impeller is rotatably arranged in the compressor box, a compressor impeller is arranged at one end of the compressor impeller shaft; A transmission groove is provided inwardly at the end of the compressor impeller shaft, and a plurality of protrusions are provided on the inner wall of the transmission groove. The end of the turbine shaft is rotatably arranged in the transmission groove, and a plurality of inner grooves are provided circumferentially on the turbine shaft. An elastic transmission structure is installed in each of the inner grooves, and the elastic transmission structure cooperates with the protrusions for transmission.

2. A split supercharger rotor structure according to claim 1, characterized in that: The elastic transmission structure comprises an elastic member and a transmission block. One end of the elastic member is fixed in the inner groove, and the other end is fixedly connected to the transmission block.

3. A split supercharger rotor structure according to claim 2, characterized in that: The elastic member is a telescopic spring.

4. The split supercharger rotor structure according to claim 1, characterized in that: The outer walls of the turbine box and the compressor wheel box are both provided with bearings, and the turbine shaft and the compressor wheel shaft are assembled and connected with the bearings.

5. The split supercharger rotor structure according to claim 1, characterized in that: The transmission groove is arranged in a stepped shape, the turbine shaft extends into the transmission groove, and the protrusion is arranged circumferentially on the inner wall of the transmission groove.

6. A split supercharger rotor structure according to claim 5, characterized in that: The protrusion and the transmission groove are arranged integrally.

7. A split supercharger rotor structure according to claim 6, characterized in that: The cross section of the protrusion is triangular.

8. The split supercharger rotor structure according to claim 1, characterized in that: The turbine box and the compressor box are also connected with an exhaust pipe and an intake pipe respectively.

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